The mithril knife is a Ranged throwing weapon that is only available to members. The player must have at least 20 Ranged to wield this throwing knife. They can be obtained either by using the Smithing skill or trading with another player. Mithril knives can be poisoned and can be wielded with a shield or god book for protection.

To create mithril knives the player must have at least 57 Smithing. Each mithril bar will create 5 mithril knives and the player will receive 50 Smithing experience.